Senthil Kumar Raju

Abstract

Schiff bases are useful chemical compounds with a wide range of applications. The Schiff bases are synthesized via the condensation reaction between carbonyl compounds (aldehydes or ketones) and compounds having an amine group and the Schiff base is characterised by an imine or azomethine (-C=N-) group. These compounds are extensively used as ligands to form coordination complexes with metal ions and are widely utilized in the treatment of various ailments. Sulphonamides are biologically significant class of drug-like chemical derivatives due to their good oral absorption and urine excretion. Sulphonamides are widely used as antimicrobial, anti-inflammatory, anticancer and antiviral drugs in addition to acting as powerful Carbonic anhydrase hCA inhibitors, HIV protease inhibitors, anti-obesity and anti-thyroid agents because of their less poisonous, more reactive and cost-effective nature. Sulphonamide-based Schiff bases and their metal chelates have attracted the focus of researchers due to their broad range of pharmacological characteristics. In this review, various pharmacological uses of Schiff base metal complexes generated from sulphonamide derivatives are discussed.   Keywords: Sulphonamide, Schiff bases, Metal complexes, Biological activity, Coordination chemistry

Open full article page

Abstract

Mannich bases are beta-amino ketone-carrying compounds that are the end products of the Mannich reaction. The Mannich reaction is essential in the synthesis of nitrogen-containing compounds. The Mannich reaction, a nucleophilic addition reaction that forms carbon-carbon bonds, is employed in the synthesis of numerous natural products, drugs and other compounds. There are several aminoalkyl chain bearing Mannich bases with high curative value, such as fluoxetine, atropine, ethacrynic acid, trihexyphenidyl, and many others. According to the literature, Mannich bases are highly reactive and have been demonstrated to have powerful anti-inflammatory, anticancer, antifilarial, antibacterial, antifungal, anticonvulsant, anthelmintic, antitubercular, analgesic, anti-HIV, antimalarial, antipsychotic, antiviral, antilipase activity and other properties. The primary source of, -?,β-unsaturated ketone, which can be produced by deaminating the hydrogen atom of the amine group, is responsible for the biological action of Mannich bases. However, a number of minor biological functions of Mannich bases have been reported, including their ability to control blood pressure or prevent platelet aggregation, their impact on parasites and ulcers, and their use as medications for mental health issues. Since there is a greater need for anticonvulsant pharmaceuticals, these anticonvulsant medications containing N-mannich base groups will exhibit an increase in lipophilic nature and hence have improved blood-brain barrier penetration. The overview concludes with a brief explanation of the potential of Mannich bases as inhibitors of various enzymes or ligands for various receptors. Keywords: Mannich base, Beta­amino ketone, Biological activity, Anti­microbial activity, Anti­cancer activity

Open full article page